import { type SignatureProvider } from "../signature_provider.js";
export type TransitionState = "PREPARED" | "MIGRATING" | "SHADOW_VALIDATED" | "ENFORCE_SWITCHING" | "COMPLETED" | "FAILED";
export interface StateChange {
    from: TransitionState;
    to: TransitionState;
    at: number;
    by: string;
    reason?: string;
}
export interface MigrationTransitionRecord {
    schema_version: 1;
    transition_id: string;
    project_root: string;
    task_ids: string[];
    cutoff: number;
    state: TransitionState;
    migration_run_ids: string[];
    affected_requirement_ids: string[];
    previous_enforce_state: boolean;
    shadow_results?: {
        task_id: string;
        deep_before: string;
        deep_after: string;
    }[];
    created_at: number;
    updated_at: number;
    state_changes: StateChange[];
    hmac?: string;
}
export declare class MigrationTransitionStore {
    private readonly projectRoot;
    private readonly provider;
    constructor(projectRoot: string, provider?: SignatureProvider);
    private filePath;
    save(record: MigrationTransitionRecord): Promise<MigrationTransitionRecord>;
    read(id: string): Promise<MigrationTransitionRecord | null>;
    listAll(): Promise<MigrationTransitionRecord[]>;
    transitionState(id: string, from: TransitionState, to: TransitionState, by: string, reason?: string): Promise<MigrationTransitionRecord>;
}